Waterleak from cold air return after heavy rain

[naildriver7]

The other night (2:45 AM) a heavy rain poured water in thru the cold air return which happens to be over the bed in rear of unit.It is a High Country 2016, HM375FL. Thought I had repair done by local repair shop and had no problems until a heavy rain hit us. The repair was, tighten bolts and install sealant around them and around the seal itself. Currently covered by the proverbial blue tarp. Has anyone had this problem???? What was the fix??? I am going to go to Camping World Nashville later this month for the warranty repair. It just bugs me that this could happen.

Thanks for the replies.
Joe